Evidence map›Paper›PMID 25239072›Full record

ArticleEuropean journal of pharmacology2014

Targeting putative mu opioid/metabotropic glutamate receptor-5 heteromers produces potent antinociception in a chronic murine bone cancer model.

Branden A Smeester, Mary M Lunzer, Eyup Akgün, Alvin J Beitz, Philip S Portoghese

Abstract read
In one paragraph

Article in European journal of pharmacology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.0field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 45 citations in OpenAlex.

  1. Review
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  7. Article
  8. Article
  9. Targeting MOR-mGluRNeuropharmacology · 2019
    Article
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  14. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Branden A SmeesterDepartment of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN 55108, United States.
Mary M LunzerDepartment of Medicinal Chemistry, College of Pharmacy, University of Minnesota, Minneapolis, MN 55455, United States.
Eyup AkgünDepartment of Medicinal Chemistry, College of Pharmacy, University of Minnesota, Minneapolis, MN 55455, United States.
Alvin J BeitzDepartment of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN 55108, United States.
Philip S PortogheseDepartment of Medicinal Chemistry, College of Pharmacy, University of Minnesota, Minneapolis, MN 55455, United States. Electronic address: porto001@umn.edu.
University of Minnesota · US

Funding

Ligands that target opioid-chemokine and opioid-mGlu5 heteromersR01DA030316 · NIDA · UNIVERSITY OF MINNESOTA · PI PORTOGHESE, PHILIP S · 2011 to 2015
$2.6M
NIDA NIH HHS R01 DA030316NIDA NIH HHS R01DA030316
6 · The paper itself

Abstract

The therapeutic management of chronic pain associated with many cancers is problematic due to the development of tolerance and other adverse effects during the disease progression. Recently we reported on a bivalent ligand (MMG22) containing both mu agonist and mGluR5 antagonist pharmacophores that produced potent antinociception in mice with LPS-induced acute inflammatory pain via a putative MOR-mGluR5 heteromer. In the present study we have investigated the antinociception of MMG22 in a mouse model of bone cancer pain to determine its effectiveness in reducing this type of chronic nociception. There was a 572-fold increase in the potency of MMG22 over a period of 3-21 days that correlated with the progressive increase in hyperalgesia induced by bone tumor growth following implantation of fibrosarcoma cells in mice. The enhancement of antinociception with the progression of the cancer is possibly due to inhibition of NMDA receptor-mediated hyperalgesia via antagonism of mGluR5 and concomitant activation of MOR by the MMG22-occupied heteromer. Notably, MMG22 was 3.6-million-fold more potent than morphine at PID 21. Since MMG22 exhibited a 250,000-times greater potency than that of a mixture of the mu opioid (M19) agonist and mGluR5 antagonist (MG20) monovalent ligands, the data suggest that targeting the putative MOR-mGluR5 heteromer is far superior to univalent interaction with receptors in reducing tumor-induced nociception. In view of the high potency, long duration (>24h) of action and minimal side effects, MMG22 has the potential to be a superior pharmacological agent than morphine and other opiates in the treatment of chronic cancer pain and to serve as a novel pharmacologic tool.

Indexed as

AnalgesicsAnimalsBone NeoplasmsCell Line, TumorDrug ToleranceHyperalgesiaLigandsMaleMiceMice, Inbred C3HMorphineNociceptionPainReceptor, Metabotropic Glutamate 5Receptors, Opioid, muAnalgesicsGrm5 protein, mouseLigandsMorphineReceptor, Metabotropic Glutamate 5Receptors, Opioid, muMorphine: CID:5288826MPEP: CID:3025961

Identifiers

PMID25239072
PMCPMC4259840
OpenAlexW2047913739

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.